And finally tonight, we are looking at the per suit of career happiness. And there's an invitation from the australian tourism counsel to come there and get paid for jobs like having fun, eating food. But abc's nick watt went in search of what really ends up being the happiest jobs, if you stay near home. Reporter: The want ad claims world -- hanging in australia, earning 100 grand and telling the rest of us how great it is. How about working here as the chief funster? Reporter: Basically crashing concerts and writing reviews. That smug fellow landed best job in the world last time around, becoming caretaker of a desert island. Okay, great. But this advertising gimmick got us thinking. What actually is the best job in the world? According to a "u.S. News and world report" survey it is -- wait for it -- dentist. Pays well, demand is high. And you're helping people. We went to my kid's school with a simple question, what do you want to be when you grow up? A dentist. Reporter: Does he read "u.S. News and world report?" Magician. Reporter: Yourself going to be a busy guy. Construction worker, nice. But the most popular answer by a mile -- fireman. Fireman. Fire fighter. A dad and a fire fighter. Reporter: And guess what? A university of chicago study found members of the clergy are the happiest workers, because they help people. Teachers are in the top ten, same reason. Number two on the list? Firefighters. 80% are satisfied with their work. A fireman. Reporter: The moral of our tale -- we should follow those childhood dreams. Forget a flash of fun in australia. Firefighter is probably the best job in the world. Nick watt, abc news, los

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